Brown



(No Model.)

A. BROWN.

BEVEL.

Patented Jan. 27, 1891.

//v VENTOH A TTOHNEYS i V I WITNESSES in: Romans Farms 00.,FHOTfl-LITHL, WASHINGTON, n. c.

time YATES ALFRED M. BROlVN, OF \VORCESTER, MASSACHUSETTS.

BEVEL.

SPECIFICATION forming part of Letters Patent No. 445,520, dated January27, 1891.

Application filed April 10, 1890.

To all whom it may concern/.-

Be it known that I, ALFRED MERRILL BROWN, of \Vorcester, in the countyof Worcost-er and State of Massachusetts, have invented a new and usefulImprovement in Bevels, of which the following is a full, clear, andexact description.

My invention relates to an improved bevel, and has for its object toprovide a simple and durable tool especially useful to carpenters andstair-builders, capable of use not only for obtaining a correct singleor double bevel, but which may also be employed to gage the length andbreadth of the work, or as a square; and a further object of theinvention is to so construct the tool that the various adjustments maybeconveniently-and expeditiously made.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similarfigures and lettersof referenceindicate corresponding parts in all the figures.

Figure 1 is a plan view of the tool when used as a bevel. Fig. 2 is aplan view of the body of the tool with the bevel-arms detached for useas a gage. Fig. 3 is a side elevation of the tool with the bevel-armsapplied thereto. Fig. 4 is a plan view of the tool when in position foruse as a square. Fig. 5 is a transverse section through the adjustingand connecting devices of one of the bevelarms. Fig. 0 is a verticalsection through one of the body clamping and guiding cleats, and Fig. '7is a plan View of the upper tie-plate of the adjusting mechanism of thebevel-arm.

The body of the device consists of two bars 10 and 11, preferablyrectangular in crosssection and of any desired length, each of Y whichbars is provided in one side near its outer end with a recess 12. Thebars are held to slide one upon the other and are guided in saidmovement by two guide-clips 1-3 and 14:. The guide-clip 13 consists of aperpendicular member a, at the ends of which horizontal members a a areformed. The length of the member a is practically equivalent to thecombined thickness of the body- Serial No. 347,334. (No model.)

bars, and the length of the members a and (0 correspond, essentially,with the width of the side bars. The upper member a is slotted toreceive a screw 15. secured in the upper body-bar, and the lower memberis provided with an upwardly-extending lip a, which engages with oneside face of the lower body-bar. The clip 14 is practically the same inconstruction with the clip 13; but the vertical member (2 thereof islonger than the corresponding member of the clip 13 and the upper memberI) is provided with a downwardly-extending lip (9 adapted for engagementwith the face of the upper body-bar opposite to the face of the lowerbar, with which the lip a of the clip 13 contacts, and in the lowermember of the clip 14. a slot is made to receive a screw 16, attached tothe under face of the lower bar. The under face of the upper horizontalmember I) of the clip 14: does not contact with the upper surface of theupper body-bar, and is provided with a threaded aperture, through whicha set-screw 17 is downwardly passed, which set-screw has a bearing upona clamp.- ing-plate 18, the said plate being provided with an uppersocket to receive the set-screw and alower bearing-face. The clamp-plateis further provided at opposite sides with upwardly-curved fingers 19,which clamp the side surfaces of the upper member of the clip, as bestshown in Fig. 3. By means of these two clips the body-bars are guided intheir movements one upon the other, and when they have been properlyadjusted they may be securely held in the adjusted position bymanipulating the set-screw 17 in such manner as to cause the clamp-plate18 to bear down tightly against the upper body-bar, and thereby compressthe two bars between thesaid clamp-plate and the lower member of theclip, as illustrated in Fig. (3.

To the recessed end of each of the bodybars a bevel-arm A is adapted foradjust-able attachment. These arms may be of any desired length, and areso constructed that the blade-section thereof, which constitutes thebody of the arm, is provided with a beveled upper surface and a flatunder or bearing surface. From the center of the body portion of thearms a rearward preferably spider-like extension is projected, and thearms of the said extension are united at .the rear with a disk 21, (bestillustrated in Fig. 23,) which disk is provided with an angularupwardly-extending flange 22 and a central aperture countersunk upon theunder race of the disk. (See Fig. 5.)

The arms A at each end of the tool are preferably of the same. lengthand are alike in construction, except that the extension 20 of the armadapted for attachment to the bar 10 is curved upwardly, as shown inFig. 8. In connection with the arms a clampingmechanism Bis employed.(Best illustrated in the section, Fig.5.) This clamping mechanismconsists of an upper tie-plate 23, a lower tieplate 24, and a centralscrew-bolt 25, provided with a lock-nut 26, which bolt passes throughcentral apertures in the plates, and of a set-screw 27. The upper tie isprovided with a transverse channel 28 in its under face of sufficientdepth and width to receive the upper surface of the body-bar to which itis to be applied, and by reason of the channel being formed in the uppertic-plate the said tie-plate extends downward in contact with the sideedges of the said bar.

At one side of the channel 28 the material of the plate is preferablyreduced in width, as shown at d, Fig. 7, and in dotted lines, Fig. 1,and in the outer extremity of this reduced portion of the uppertie-platea threaded aperture is produced, in which the set-screw 27 isentered, and between the aperture receiving the set-screw and thecentral aperture (Z a recess d is formed in the under face of the uppertie-plate. The aperture (Z is unthreaded, and one side wall thereof ismade flat, for a purpose hereinafter explained. The lower tie-plate 24is also provided with a channeled surface corresponding imposition withthe equivalent surface of the upper plate, the channeled surface of thelower plate being adapted to receive the under face of the body bar. Theaperturein its channeled surface corresponds in location with theaperture (1 of the upper plate, and the said lower tie-plate is madelong enough to enable the lower end of the set-screw 27 to bear againstthe same at one side of the channel, and between the bearing-surface ofthe set-screw and the aperture in the lower tie-plate a stud 29 isformed upon the upper face of the latter, the upper end of which stud isadapted to enter the recess d in the upper tie-plate. The stud issurrounded by a coil-sprin g 30, having a bearing upon the opposedsurfaces of the two plates, as best shown in Fig. 5. The screw is passedthrough the countersunk aperture in the spider-extension of thebevel-arm, and is also passed upward through the apertures in thetie-plates and beyond the upper plate,

. and upon the upper end of this screwa lockturning its threaded end atone side is made flat to her against the flattened portion of the wallof the aperture (Z in the upper tieplate. \Vhen the arm is attached tothe body bar, that portion of the screw between the two plates fits-intothe recess 12 of the body-bar. When the device is used as a bevel,either arm may be placed in any desired position by loosening theset-screw 27, and when the proper position of the arm is obtained thesetscrew is screwed downward to a bearing upon the extension of thelower tie-plate, whereupon the said tie-plate is forced downward to africtional contact with the flange 22 of the spider-like extension 20 ofthe bevel-arm, and the said arm is prevented from turning.

The stud 20 serves to assist in preventing lateral movement of thetie-plates, and the spring 30 tends to force the two plates apart whenthe lock-nut 26 is unscrewed, thus rendering the detachment of eitherone of the bevel-arms from the body-bar very convenient when suchdetachment is desired.

lVhen the device is to be used as a gage, both arms are removed, asillustrated in Fig.2, and when used as a square the screw 15, secured tothe upper body-bar, is removed, for in-,

stance, whereby the lower body-bar may he slid from beneath the upperbar, and the clip 13 will readily fall from engagement with the bar, Theset-screw 27 of the arm attached to this bar is then loosened and thebar carried over the bevel-arm to extend at a right angle across thebevel-edge thereof, as shown in Fig. 4, and when the body-bar isin thisposition the set-screw is tightened. Thus a perfect square is obtained.

lVhile specific construction has been shown and described, equivalentconstruction may be employed without departing from the spirit of theinvention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In an implement of the character de scribed, thecombination, with the two bars 1O 11, overlapping attheir inner ends andpro vided near their outer ends with notches 12 12, of the U shaped clip13, embracing the two bars and having a lip a on the forward end of itslower member and a slot in its upper member, a screw 15, extending fromthe bar 10 through said slot, a second similarlyformed clip 11, thelower member of which is slotted and the upper member provided with alip Z1 and a vertical set-screw 17, the screw 16,passing through saidslot into bar 11, and the plate 18 between the upper face of the bar 10and the inner face of the member I), and having fingers 19 19, holdingit to said member Z), substantially as set forth.

2. The combination, with the two bars adjustably connected at theirinner ends, ofthe bevel-arms at the ends thereof, each having a centraldisk 21, the n pper and lower channeled tie-plates 23 24, embracing theends of said bars, a screw 25, passed through the disks and IIO eachpair of tie-plates, and a set-screw 27, passed down through the uppertie-plate of each pair parallel with screws 25 and bearing on the lowertie-plates to bind them to the disks 21, substantially as set forth.

3. The co1nbination,with a bar, of a beveledge A, provided with acentral disk 21 on its rear edge, having an annular flange 22 on itsupper side, channeled tieplates embracing the bar, the lowerof the twoplates resting 011 said flange 22, a screw passing through the said diskand plates, and a second screw 27, passed down through the uppertie-plate and hearing at its lower end on the other plate to bind it tothe said flange 22, substantially as set forth.

4. An implement of the character described, consisting'in two barsadjustably connected at their inner ends and each having a gagenotch 12in its forward edge, bevel-edges A A, having central pivot-apertures,channeled tieplates embracing the ends of the bar, pivotscrews passedthrough said apertures, notches l 2, and the tie-plates,and the adjllStlllg-SCI'GWS passed through the outer tie-plates and bear- 25 ing attheir inner ends on the lower tie-plates to bind them against thebevel-edges, substantially as set forth.

5. In a tool of the character described, the combination, with the bar,of channeled tieplates contacting with the upper and lower faces of thebar, the upper tie-plate being provided with a recess and the lowerplate with a spring-surrounded stud adapted to enter the recess, aset-screw held to turn in the upper plate and contactwith the lowerplate, a bevel-arm having one straight edge and a rear centralextension, a screw having one of its sides flattened passed through theextension of the bevel-arm, the upper and lower tie-plates. and incontact with the bar, and a lock-nut located upon the upper projectingend of said screw, as and for the purpose specified.

ALFRED M. BROWN. Witnesses:

Miss L. M. GHAPIN, Mrs. ALFRED M. BROWN.

